a quick fix on the mobile view please

First thank you for this very cool theme. I really enjoy it.
Everything is ok from the desktop view.
There are only two adjusments I was unable to fix on the mobile view.

1- Jumbotron section: part of the text color in the header turns grey (instead of white) in the mobile view.
(it doesn’t appear grey on the mobile view from the desktop though)
2- Contact us section: there is a large space between the paragrah and the contact form only on the mobile view.

the website is: http://salleslagrace.com/
Can you help me to fix this?

Thanks in advance

Hey there,
I hope you’re doing well today

You can try achieving this by adding the following CSS code in the Custom CSS option of your theme on the below path.

/*remove space on mobile*/
@media (max-width: 550px){
/*color of text: .bottom-header h2 {
    color: #fff;

  #contact-us > div.section-content > div > div:nth-child(1){
  display:none !important; 

Admin Area -> Appearance -> Customize -> Additional CSS

Best Regards,